Concise skills rollout: discipline (18 skills, 16 model-invoked) #6548

Part of #6476. Rewrite discipline's skills to the skill criteria in one draft PR, following the per-plugin runbook (/playbooks:skill-authoring, reference/rewrite-a-plugin.md). The runbook and the rewrite protocol it cites decide what ships; this issue holds only what is specific to the plugin.

The plugin today

• Skills: do-your-research, do-your-research-deep, follow-our-standards, hold-my-hand, mind-your-maxims, pick-for-the-problem, point-dont-copy, reason-dont-recite, recheck-against-upstream, recheck-against-upstream-deep, reuse-or-replace, script-the-deterministic-work, scrutinize-dont-coast, setup (user-invoked), sweep-all, tighten-your-output, use-your-skills, wait-what (user-invoked).
• Outcome eval cases under evals/: 0. Probe files under probes/: 0.

Done when

• The PR merges with a per-skill decision table in its body, and every shipped description and body was measured.
• Any skill left unmeasured, and why, is named in the PR.

Needs a person

• Approve the eval spend for this plugin (the /evals:plugin-eval estimate) before the measured passes.
• Review the draft PR and mark it ready.

Generated by Claude Code